Apparatus for the autogenous working of metals under water.



F. W1 BRUSGH & W. F. I. BEYER. APPARATUS FOR THE AUTOGEIIOUS WORKING 0FMETALS UIIUER WATER. APPLICATION FILED IIIAYZZ. I915.

LWSAQQD Pa'tentffid Sept. 10, 1918,.

. To all whom it may concern: c

' sure;

FRIEDRICH WIL HELM BRUSCH AND WALTER FRANZ JOSE BEYER, F DORTMUND,,GERMANK ASSIGNOBSTO DE'UTSCH-LUXEMBURGISCHE BERGWERKS-UN'D Htl'TTEIM-AK'I'IENGESELLSGHAFT, OF BOGHUM, GERMANY.

' APIARATUS FOR THE AUTOGENOUS WORKING OF METALS UNDER WATER.

Be itlgnown that we, FRIEDRICH WILI-IELMV "Bunsen and- WALTER FRANZJosnr Berna,

both citizens of .the German Empire, resid-- ing at Dortmund, intheKmgdom oi- Prussia German Empire, have invented new an usefulImprovements in Apparatus for the Autogenous Working of Metals UnderWater, of which lhefollowingis, a specification. a

Our invention'melates toiapparatus for the autogenous working ofmetals-under water. When working metals under water by means ofautogenous burners means must be provided for protecting the flame ofthe burner from the water and 'the like.

I. Heretofore ithas been suggested to provide suggested to provide meansinconnection a casing surrounding the ame, placing the same on the metalto be worked, and removing the water therefrom. It has; also been withthe burner whereby compressed gas is discharged around the burner soasto provide a layer of gas invtheform of a cylinder inclosing theflame. Our invention is based on the discovery that the flame can be.

brought to action under the water without being thus protected bymechanical means and without providing a cylindrical sheet of a gas. Wehave found that the flame can be thoroughly protected against the waterby means of one, two or more jets o a compressed gas which aredischarged a the side of the flame and do not form a closed cylindriealsheet. Thereby the consumption of compressed gas is materially reducedas compared to the old method in which the gas surrounded the flame, andas compared to the mechanical means for protecting the flame; ourimproved apparatus is more simple in operation, and it enables theoperator to have access to the point which is being worked and to applythereto soldering media and the like. I

In order that our invention be more clearly understood, an apparatussuitable for--carrying the same into efi'ect has been sh 'bwn bywayef-example in the accompanying drawing, in which Figure 1," is a sideview of the burner, and Fig. 2, is a bottom view showing the dis:

char e end'of the burner and the nozzles for ischarging the jets 01gas."

In the example'shown 1n the drawin Specification of Letters lPatent.Fateniggd Sept 10, 1918, ap ucatio 'mea'm e2, 1915. Serial No. eases.

the burner is equipped with two nozzles for discharging compressed gas,which nozzles are so disposed as to discharge the jet of compressed gassubstantially in a direction parallel to the flame. But we wish it to beunderstood, that our inventionis not limited to the example shownin thedrawing, and that the number of nozzles for discharging jets ofcompressed gas which shows the best results as to economy and efliciencydepends on the conditions of each particular case.

Referring now more particularly to the figures, the burner 1 may beconstructed in any known or preferred way. As shown it is connected withsupply tubes 2 and 3 for hydrogen and oxygen respectively, as is knownin the art. For holding the burner in position for working on the metal,the upper surfaceof which has been indicated in Fig. 1 by the numerals,the burner-is equipped with wheels 5 which hold the same at the properdistance from the metal, and it is preferably advanced in the directionof the arrow a. For preventing the water from having access to the flamewe provide a nozzle or nozzles 6 and 7 which are connected with asuitable supply tube 8 for supplying a suitable compressed gas such ascarbonic acid or .the like, and we arrange the said nozzle or nozzles insuch a way, that the jet of air or gas is discharged therefrom slightlvabove-the lower face of the burner 1. The nozzle or nozzles 6 and 7 forthe compressed gas are mounted in such a way, that the direction of thejet discharged therefrom can be varied within certain limits, accordingto circumstances.

In respect thereof Fig. 1 shows in full lines nozzles 6 and 7 havingtheir axes parallel to the flame of the burner; however, at 10 joints-orarticulations of any known or suitable construction are provided which"permit angular adjustment of said nozzles 6 and 7 within certainpredetermined limits, that 1s, within a small range, such as is forexample shown with dotted lines. But in any case, the function of thejet or, jets is "toward the flame, so that the axial lines of theintersect each other below the core 9 on the flame as indicated by thearrows. tubes 2, 3, and 8 of the apparatus are rigidly connectedtogether by means of suit able connections or clampsll, so as to formtended to by the diver.

As is shown in the figures, we prefer to one single apparatus which canbe easily atdispose the nozzles 6 and 7 a little above the nozzle of theburner. Thereby the jets of compressed gas are not liable to blow outthe flame, which might otherwise be the case. In the preferred formshown in the figures the nozzle or nozzles for the compressed gas arearranged in such a way, that the jets dischaigged therefrom areprojected or di rected within a plane through which the burner is moved,and so that a jet is produced in front of the burner moving over themetal. Thereby the preheating of the blank is effected more thoroughly,because the water is removed from the surface to be worked. Bydischarging the jet of gas in a direction parallel to. the flame orsubstantially so and at low velocity, the flame is not deflected and itshottest zone or core 9 not displaced, which would otherwise be the case,where the jet acts at one side of the flame. In someca'ses we prefer toprovide two nozzles for compressed gas for prevent,

ing deflection of the flame.

In the type of torch wherein the flame was enveloped in a protectingmantle of air or gas, as carbonic acid gas, the air or gas consumptionwas so great that a compressing plant was required to supply the sameduring sub-aqueous operations, and it has been a difficult problem,occupying engineers for some time, to find some way of dispensing withsuch cumbersome auxiliary apparatus.

Vi e beliv'e we are the first to dispense with such apparatus, and thisis due to our discovery that the flame need not be enveloped in aprotecting gaseous mantle, so that one or only a few air or gas jetsneed be used, preferably so directetd that these jets will be parallelto the flame. We are thereby c11 ahlcd to carry out sub-aqueousoperations with the torch extending over a long time, and provide thenecessary gas supply, say of carbonic acid from the usual carbonic acidbottles or steel flasks, thus dispensing with all compression.

As already mentioned, the one jet or the several jets of compressed gasact so as to guide or steady the flame. Consequently, said jet or jetsmust as a rule, alter the flame little as possible, but before all, itis essential that, as already nmntioi'ied, the hot-- test zone or coreof the flame be under no circumstaimes displaced or deflected, because,according to our trials and experience, in sub-aqueous operations, avery important function of the flame is to effect the preheatof theburner, while the flame taken as a whole, is much longer. Therefore, thejet or jets of compressed gas mayeventually deform somewhat the flameproper as longas the hottest portion of the flame, i. e.,.its core,remains intact. As already pointed out, another advantage of the jet orjets of com pressed gas is that the same make the blank water-free inthe direction of cutting or welding and, what is more, at the very placein which for a successful operation, the blank is to be preheated duringthe progress of the work. We claim:

" 1. In a subaqueous torch, two nozzles arranged side by side, means forejecting a flame from one of said nozzles, means for ejectingnon-combustible gas from the other nozzle while submerged to preventwater from reaching the flame from that side on which thenon-combustible gas ejecting nozzle is arranged, the latter beingarranged to project the non-combustible gas onto the" point acteduponblank at a point beside the by the flame. V

2. In a subaqueous torch, a flame ejecting nozzle, a non-combustible gasnozzle arranged in front of and at theback of the flame ejecting nozzle,and means to eject,

non-combustible gas from the front and rear nozzles to form asubstantially fiat sheet of non-combustible gas, whereby two sides ofthe flame, are free.

. 3. In a subaqueous'torch, a flame ejecting nozzle, a non-combustiblegas nozzle: arranged in front of and at the back of the flame ejectingnozzle, and means to eject non-combustiblc gas fromthe front and rearnozzles to form a substantially flat sheet of I non-combustible gas,wherebytwo sides of the flame are free, and means on the torchto directits movement 'longitudinallyof the sheet of gas; V 4'. In a subaqueoustorch, a flame ejecting nozzle, means to move the latter, an angu-vlarly adjustable nozzle in front" of and at the back of the flameejectingnozzle' and arranged to direct in the plane of movement of thelatter, jets slightly inclined toward said flame, whereby the a iallines of" the front and rear nozzles intersect each other below the coreofthe flame without disturbing the core.

In a sub-aqueous torch for cutting and; Welding metals, means forseparately 1 2 plying the constituents'of a completely combustible gasmixture, a burner at which said constituents form a flame, means on theburner to direct its movements over thesurfaceiof the blank,-andangular-1y adjustable jet devices in front and at the back of the burnerand arranged to direct in, theplane of movement of the burner and on aportion of the circumference only of the flame jets slightly inclinedtoward said flame, so that the axial lines of said jets intersect eachother below the core of the flam' without disturbing said core.

6. In a sub-aqueous torch for cutting and welding metals, means forseparately sup- Elying the constituents of a completely comustible gasmixture, a burner at which said constituents form a flame, means on theburner to direct its movements over the surface of the blank, andangularly adjustable jet devices terminating slightly above the burneropening in front and at the back of the burner, and arranged to directin the plane of movement of the burner and on a portion of thecircumference only of the flame jets, slightly inclined toward saidflame, so that the axial lines vof said jets intersect each other belowthe core of the flame without disturbing said core.

In witness whereof we havechereunto set our hands in presence of twowitnesses.

FRIEDRICH, WILHELM BRUSCH, WALTER FRANZ JOSEF BEYER. Witnesses JOSEPHWYNEN, J. D. ZIESECKY.

